Battery charger



FIG. 1 is a perspective view from above of the battery charger showing my new design;

FIG. 2 is a front perspective view of the battery charger of FIG. 1;

FIG. 3 is a rear perspective view of the battery charger of FIG. 1;

FIG. 4 is a top perspective view of the battery charger of FIG. 1;

FIG. 5 is a bottom plan view of the battery charger of FIG. 1;

FIG. 6 is a left side elevational view of the battery charger of FIG. 1; and,

FIG. 7 is a right side elevational view of the battery charger of FIG. 1. 

The ornamental design for a battery charger, as shown and described. 